Improvement in boat-detaching apparatus



as suspended vfrom the davit.

PATENT @Tirion IRA ABIEI. RICHARDS, or MIDDLETCWN, CONNECTICUT.

VIMPROVEMENT IN `BO-AT-DETCHING APPARATUS.

Specification forming part of Letters Patent No. 115,360, dated May 30,1871.

To all 'whom it may concern:

Be itknown that I, IRA ABIEI. RICHARDS, of Middletown, in the 'county ofMiddlesex and in the State of Connecticut, have invented certain new anduseful Improvements in Boat- Detaching Apparatus; and do hereby declarethat 4the following is a full, clear, and exact description thereof,reference .being had to the accompanying drawing and to the letters ofreference marked thereon making a part. of

this specification. V y 5 `The nature of my invention consists in the`construction and arrangement of a device or apparatus for detachingships boats from their davits, as will behereinafter morefully setforth. I I

o In order to enable others skilled in the art `to which my inventionappertai ns to make and usethe same, I will nowproceed `to describe itsconstruction andoperation, referring to the annexed drawing, in which- 4`Figure l is a longitudinal vertical section,

and Fig. 2 a horizontal section of my device.

Fig. 3 is Va side view of the jaws which suspend the boat. j i

Arepresents the keel of the boat, and B the stern-seat. G is a metalframe, secured on the under side of` the seat B, and within which framethe principal parts of my apparatus are arranged.` D` is an l uprightshaft, passing through the frame (l and resting in a step, E,

fastened to the keel, for the purpose of hold- `ing the lower end of theshaft orspindle in position. On the spindleD, within the frame C, aretwo arms, G Gr,placed parallel with each other, one above theother, asshown,

and provided at their ends with rollers a a. The lower set of theserollers rests on the bottom plate of the frame C, while the upper setrests on the lower set, as shown in Fig.` 1. OnV the upper rollers restshooks H H, which are constructed in the peculiar manner shown in Fig. 3,and are pivoted ina slotmade in the seat B. o The hooks or rather jaws HH extend above said. seat, and are provided" with an "opening, b, halfin each jaw, to receive the hook I of the tackle-block pivots or pins,on which the jaws swing apart atthe top torelease the hook I., l0n thespindle D, below the frame C, is an4 arm, J,

d d are the Another arm, N, on the spindle D, connects,

by a rod, O, with another set of jaws, 8vo., in the bow. of the boat,exactly like the 'one already described, with the exception of the armJ, rod K, and lever L, which are only needed at one end of the boat. Itis intended to have the frame C securely fastened to the 'under side ofthe seat and metal straps embedded in the top side of the' seat, andbolts passing through the straps, down through the keel, to hold thewhole firmly in place. It will readily be seen that, the lever L restingon the block or seat M, no reasonable amount of weight will part thejaws, bearing, as they do, through the line of centers of the jaws androllers on the lower plate of thelframe C; but,

j with very little power applied in lifting, the

lever L can be raised, and the rollers will pass out from under the endsof the jaws, and both ends of the boat will be instantly andsimultaneously released from the davit-tackle at any point desired,before or after reaching the water.

My double roller-trip is susceptible of various modiiications, which,however, all involve the same principle. For instance, I may put the toprollers on the tangs of the jaws, and the bottom ones in suitablebearings in the bottom plate, and then provide an arm on the spindle,with a wedge-shaped front to pass be tween the rollers. The same device,namely, the double roller-trip, may be arranged in various other ways.

` Having thus fully described my invention, what I claim as new, and'desire to secure by Letters Patent, is

A double roller-trip, constructed and ar ranged substantially as shownand described, and for the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand andseal this v12th day of December, 1870.

l VIRA ABIEL RICHARDS. [1.. s]

Witnesses:

C. L. EVERT, JAI/Ins CURTIS LAMB.

`connected. by the rod K with the bent lever

